(19)
(11) EP 0 319 935 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
08.08.1990 Bulletin 1990/32

(43) Date of publication A2:
14.06.1989 Bulletin 1989/24

(21) Application number: 88120395.4

(22) Date of filing: 07.12.1988
(51) International Patent Classification (IPC)4: G03G 15/02
(84) Designated Contracting States:
AT BE CH DE ES FR GB GR IT LI LU NL SE

(30) Priority: 11.12.1987 US 131928

(71) Applicant: MOORE BUSINESS FORMS, INC.
Grand Island New York 14072-1697 (US)

(72) Inventors:
  • Dean, Walter Clark, II
    Simsbury, Connecticut 06070 (US)
  • Kegelman, Thomas D.
    Palm Harbour, Florida 33563 (US)

(74) Representative: UEXKÜLL & STOLBERG 
Patentanwälte Beselerstrasse 4
22607 Hamburg
22607 Hamburg (DE)


(56) References cited: : 
   
       


    (54) Conditioning apparatus for non-impact, direct charge electrographic printer belt


    (57) A belt conditioner for non-impact electrographic printing apparatus using a flexible dielectric belt (10) including a conductive member forming a ground plane (51) opposite the dielectric surface (52) has plural electrically conductive rollers (40, 41) engaging the dielectric charge receiving surface (52) to effect controlled discharge of the surface to a uniform surface electrostatic voltage before direct charge deposition by a print head (14) to form a latent electrostatic image. Corona discharge devices (35, 36, 37) can also be utilized with the rollers (40, 41) to obtain the desired belt conditioning.







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